Roller side bearing.



,A. STUCKI.

ROLLER SiDE BEARING.

APPucATmN min sEPLza, i913.

INVENTOR Patened June 20, 1916.

UNITED STATES ARNOLD STUCKI, OF PITTSBURGH, PENNSYLVANIA.

ROLLER SIDE BEARTNG,

Application filed September 23, 1913.

To alli/#10m it may (fonce/rn Bu it known that l, ARNOLD S'rioii, aresilient of lfittshnrgh, in thv county of Allegheny and State ofPennsylvania, hun, inwntml n now unil nzwfnl improvement in Rollin' SideBearings. of whirh th( following is a specification.

This inventioi'i relatos lo Sido hearings for railway ozu-S.

The object of the invention to pr fiflff a silo hearing which ispractically 'frictionA less, which works properly under :ill serviceconditions, Whether normal or nlnnn'nlil, and which performs :illoluhffr functions; ol aille honrings; which hns n lxnggv hearing surfaceand is ihn-nhl@ in svr'vizw: ono in which the working parli are efwil i@il but at the saine, Linn: are in place. which @inhodie now! :i prowllnnsins 'for prwrniiingj thv finti lil tion ini-nmol* from lwuoiningiliphicsni nn the. hearing' gurfz'un. :unl which nino in construction.und therefor@ inoxponsirf. Moth :is lo lirst cost and :is to unimi-p,

The invention comprises thu construction and arrangement of partshereinafter di scribed and Claimed.

In the. drawings, Figure l i n plan view of zr Sido hearing' embodyingthe inwnzion; Figi. 2 is d, vertical longitudinal f-mrlion lzl'iereo'lon the lino :2*2 Fig. l; anni; Fig. 5l is in mrt an and View nml in mrti rrriiffnl Crosl socton thereof.

AS illustrated in the drawingzf ing; comprises n suitable, l'rnno orhoo# :lrrnngm for attachment to lh@ hol hnt n'hirh may ho intrpjrnl with@nifl lr il' lo-iiw l The lrnnm or hwfiixn is minpiml for :i smighl;holselm: l-n ninjy hv rr-:w'iiljv :u'laaglm' lo :r mim-ing!" lmhhr, i5ir: im

imm will; n lmllom il. sith* nik m" 4, will nriilw or lnirrivrs unil lhi um or iwrl'oaelrwl for im; rvr-nhen of rivoliN4 or lmllf; lor #mininglh@ mili llmfnv or howling to thv holrlor.

'l he hollow I3 provnifsu u ivi-hf nml sin, lnnring' surface for the':inli-l'rnon member 7. Wlih homing' snri'fn'o muy hr' either integraliwith lilw hulkinhor. :'iSSln'm n. .muy ha; formm hy n. ammirato pif-il@or mvnr hor S riralw or ol'lwrvia sifnznriil lo thv frnlno or housing.'l`l1if-. hm'niits' Lhrlm'on: toldo. formell of spring; will. which ib:il-- ciently hard, and is u vlliuienl, zu; i hom'- ing,r surface. The*l:intl-friction niennhvr in' shown us a plain-faced roller 7, which hasSpecican'on of Letters Patent,

lalvnted June 20, 19'! 6.

serial No. 791,33?,

n rolling movement to :mol fro along the hearing surface. An it, nmlnsonly :i partial rotnrion in euch iliruction, it is in effect a rorlifrxnsinnher :ind nood not necessarily be oir-cular in cross soclion Solong; as il has snllicimi; onrx'eil surfzmo to rock on the boh tonihvnring snrfmrv :1nd to Contact with and roll along the nii-por hearing'member 0r holior Qa. Thr roller muy also be made sligglL-lly conical ortapering instead of cylinnlrifnl. in which @vom they housing will beCurved on :in :irc to corraspond lo the. taper of thi Cone. The he ringfsurface 8 on which tho nioniher i' roi/:ks: or mils is Shown :is levelor horizontal Troni onli 'Lo end. so that the momhP-r I nu vols lhw'ronwithout other hnn rolling: lrrtion, und without the necessity nflifting' ihr; rffir body :is if, rocks or rolls #mnu-ml linL erich: ol'hrhonsingor frame. Th@ hearing l Cloro perniis a .fre/0r swiveling all'Lho rncn underneath the wir holly in zippr-mrhingg, asking :uni leavingcurve. :is the roller (loes not. haar to roll up :in in- Plinn.

The sirio unil ml walls of the. from@ or housing are for the purpose ofconfining the rfwliing nwinhor unil preventing it from os raping! nni'hrnormal operating Conditions, :mel uw thoreforn 01' n'nrterinl livig'ht,0K- 'Lvneling 'fairly close to the top ol ilio memheir 7. f1 or lmrrierShave their Theor@ fnl upper porlion nhszhxninily Vertical, ns shown inFigi. ff. so lhei h? roller i' Cannot roll np wer tho anni?. sfriil rndWalls forinin :ilrwlnte Slope; 'l linen 1hrv trawl of tho ioi'lfingnivmlwf in wh 1li' wiliozw, 'The top mi" oi' llw Sill@ -nl wnll# urnlvoanl u, :mil form :in vlliriuni, unil s. {sfac- (lv. hom-inw (Worx iuollor la limi in Ully, n'hihf the niilfwill l :we iii-owing inw# :t mm'tho #nifl im! inn l'l.vrool'. rs n wnwqncnco ih@ wnllfi or hzn'liffi S:iro in (l iii-lily sfpgn'nlfl iigmn poSle: or lollirnns lil. lewin,lnrgo openinglsl :1li lhv, invul o? the lwrlring surface ivolh :it theends anni sillon, through hifh snow. ical. ilnsln dirt, :zml other'foreign nmlorril can rmnlily Cimino, o :is lo prevent retarding themovement of the rocking meu'iber. The side and end walls or barriers arestrengthened and Stitfened by horizontal ribs or flanges 11 and verticalribs or langes 15.

It is desirable to provide suitable means for returning the roc kingmember to central position in the frame or housing Whenever the holstersseparate. in order that it may be in proper position when the holstersagain come together and move relatively to each other. (')n account ofthe level or horizontal position of the bearing surface 9, an ordi naryroller would not automatically return to central position uponseparation of the holsters. To provide for this the rocker member orroller is arranged to return to central position by a counterpoiseacting by gravity, As shown, the roller 7 is provided with an opening oropenings 16 on one side of its geometrie axis, leaving the opposing side17 solid so that its center of gravity is not at the geometrie axis butsomewhere within the solid and heavier portion 17. Consequently, on ahorizontal surface this roller will come to rest with its center ofgravity as low as possible, or in the position shown in Fig. 2. Theresult is that it is self-centering by gravity whenever the bolstersseparate. Preferably, and as shown, the roller 7 is made of a hollowcylindrical steel shell, one side of which is weighted by casting a mass1S of lead or other heavy metal therein and allowing it to cool.

It is also desirable to provide means to prevent the rocking member fromshifting on the bearing surface so that it cannot become displaced underheavy end shocks or sudden longitudinal.blows on the car. This resultmay be secured in several ways. As shown, the roller 7 is provided ateach of its ends with a pin or trunnion 19, said trunnions preferablybeing arranged Opposite each other, or with their axes in alinement, andprojecting from the solid or heavier portion 17 of the roller below thecenter of grav ity thereof. The side walls of the frame or housing 1 areshaped to provide curved guides or runways 20, the lower edges 21 ofwhich are curved to conform to the path taken by the trunnion 19 as theroller moves back and forth along the bottom bearing surface. Saidguides or runways are formed by outwardly projecting portions 2Q of thehousing or frame, which considerably reinforce and strengthen the same.

1n usey of the bearing the roller 7 traverses back and forth alongr thebottom bearing and the two trunnions 19 travel substantially in contact.with the edges 21 of the guideways 20, which therefore preventdisplacement of the roller along the bearing surface under heavy endshocks or blows. Then the trun nions are axially in line with eachother, as shown, the roller is prevented from becoming tilted or askew,as both trunnions contact the guides at the same time, whenever theroller tends to shift on the bearing surface. Une end portion of each ofthe guide-,ways Q0 extends upwardly and is provided with an opening 23at the upper edge of the housing. This permits the rollers to be readilydropped into place, but the close spacing between the upper and lowerbearing members in use, of the bearing practically closes said openingand locks the roller in place, preventing it from becoming lost.

The pins ortrunnions 19 are on the. heavier side of the roller 7, andconsequently .amplify the eccentric loading thereof, so that the rollermore readily returns to central position when moved tl'ierefrom.

In the lrearing described the roller or rocking member is free to rollor travel on a level or horizontal surface Without other than rollingfriction and without either rising or falling upon svviveling of thetruck and by reducing friction assists in the free swiveling thereof.The pins or trunnions and the ciu'perating guides or runways prevent theroller from shifting out of normal position by end shocks of the ear.r\t the same time. this arrangement does away with the necessity ofspecial parts on the contact-- ing surfaces of the roller and bottombearing members. The construction is simple, all of the parts beingadapted for easy in spection and the entire bearing self cleaning sothat it is very efficient in operation.

'vhat l claim is:

A side bearing for railway cars, comprising a housing for the lowerbolster having its bottom forming a` bearing surface and provided withside and end vvalls or barriers having fiat upper bearing surfaces andopenings at the level of the lmttom bearing surface, and aneceentrically loaded roller rest ing on said bottom bearing surface andhaving its heavier portion provided with end trunnions, said side wallsbeing provided with curved guide-ways for cooperation with saidtrunnions, the active portions of said guideways being extended upwardlyand opening through the upper edges of the housing walls to permitinsertion of the roller into the housing.

In testimony whereof, I have hereunto set my hand.

ARNOLD STUCKI. Witnesses:

ELBnR'r L. HYDE, ILLIAM B. VnAn'ioN.

